Guide to Ireland's hills & mountains

Castlemahon Mountain

Castlemahon Mountain - Newry, Mourne and Down
© Eric Jones and licensed for reuse under this Licence

Castlemahon Mountain is the 17492nd highest peak in the British Isles and the 1419th tallest in Ireland


128.0 m (420 ft)


120.0 m (394 ft)


  • Hump

Hill / mountain range

Belfast Hills

Nearest town

OS map sheets

OSi50: 021 (Strangford Lough)